GB2340601B - Light projection device for a photoelectric smoke sensor - Google Patents

Light projection device for a photoelectric smoke sensor

Info

Publication number
GB2340601B
GB2340601B GB9928169A GB9928169A GB2340601B GB 2340601 B GB2340601 B GB 2340601B GB 9928169 A GB9928169 A GB 9928169A GB 9928169 A GB9928169 A GB 9928169A GB 2340601 B GB2340601 B GB 2340601B
Authority
GB
United Kingdom
Prior art keywords
projection device
light projection
smoke sensor
photoelectric smoke
photoelectric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9928169A
Other versions
GB2340601A (en
GB9928169D0 (en
Inventor
Masatoshi Nakamura
Hiroshi Shima
Hidenari Matsukura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hochiki Corp
Original Assignee
Hochiki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP9139647A external-priority patent/JP3032485B2/en
Priority claimed from JP9139666A external-priority patent/JP3032486B2/en
Application filed by Hochiki Corp filed Critical Hochiki Corp
Publication of GB9928169D0 publication Critical patent/GB9928169D0/en
Publication of GB2340601A publication Critical patent/GB2340601A/en
Application granted granted Critical
Publication of GB2340601B publication Critical patent/GB2340601B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Led Device Packages (AREA)
GB9928169A 1997-05-29 1998-05-28 Light projection device for a photoelectric smoke sensor Expired - Fee Related GB2340601B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP9139647A JP3032485B2 (en) 1997-05-29 1997-05-29 Light emission device of photoelectric smoke detector
JP9139666A JP3032486B2 (en) 1997-05-29 1997-05-29 Light emission device of photoelectric smoke detector
PCT/JP1998/002358 WO1998054565A1 (en) 1997-05-29 1998-05-28 Light projection device for a photoelectric smoke sensor

Publications (3)

Publication Number Publication Date
GB9928169D0 GB9928169D0 (en) 2000-01-26
GB2340601A GB2340601A (en) 2000-02-23
GB2340601B true GB2340601B (en) 2001-10-24

Family

ID=26472388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9928169A Expired - Fee Related GB2340601B (en) 1997-05-29 1998-05-28 Light projection device for a photoelectric smoke sensor

Country Status (10)

Country Link
US (1) US6271758B1 (en)
KR (1) KR100470235B1 (en)
CN (1) CN1123770C (en)
AU (1) AU733167B2 (en)
CH (1) CH693776A5 (en)
DE (1) DE19882465B4 (en)
GB (1) GB2340601B (en)
HK (1) HK1027866A1 (en)
TW (1) TW392133B (en)
WO (1) WO1998054565A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7384496B2 (en) * 2004-02-23 2008-06-10 Checkpoint Systems, Inc. Security tag system for fabricating a tag including an integrated surface processing system
GB0411859D0 (en) * 2004-05-27 2004-06-30 Fire Beam Company The Ltd A light beam smoke detector
KR101311487B1 (en) * 2004-11-12 2013-09-25 엑스트랄리스 테크놀로지스 엘티디. Particle Detector, System And Method
US7495573B2 (en) * 2005-02-18 2009-02-24 Honeywell International Inc. Camera vision fire detector and system
US8004684B2 (en) * 2009-04-09 2011-08-23 Kidde Technologies, Inc. Sensor head for a dry powder agent
DE102014108713B3 (en) * 2014-06-23 2015-07-16 Sick Ag Smoke and fire detectors
CN105626594B (en) * 2014-07-23 2017-07-25 江苏新海科技发展有限公司 A kind of jet vacuum pump
CN105973847B (en) * 2016-06-24 2019-03-01 广州新晖汽车零部件有限公司 A kind of auto lamp leaded light bar detection device
CN106228758A (en) * 2016-08-12 2016-12-14 安徽中杰信息科技有限公司 Dangerous materials smog detection method
EP3276680A1 (en) * 2017-01-25 2018-01-31 Siemens Schweiz AG Optical smoke detection based on the two colour principle using a light emitting diode with an led chip for light emission and with a light converter for converting a part of the emitted light to longer wave light
CN108593510B (en) * 2018-05-08 2024-03-01 南京江宁分析仪器有限公司 Smoke concentration detection test device and test method thereof
TWI666848B (en) * 2018-09-12 2019-07-21 財團法人工業技術研究院 Fire control device for power storage system and operating method thereof
JP7163227B2 (en) * 2019-03-19 2022-10-31 能美防災株式会社 Smoke detectors
US11137282B2 (en) 2019-09-30 2021-10-05 Asahi Kasei Microdevices Corporation Optical concentration measurement device comprising a light receiving unit with a rectangular light receiving surface

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115477B (en) * 1959-08-12 1961-10-19 Lentia Gmbh Stationary, industrial aerosol measuring device
DE1177042B (en) * 1962-03-22 1964-08-27 Walther & Cie Ag Smoke detector based on the Tyndall effect
DE2758517A1 (en) * 1977-01-07 1978-07-13 Gen Electric SMOKE DETECTOR WITH A DARK FIELD OPTICS
US5502434A (en) * 1992-05-29 1996-03-26 Hockiki Kabushiki Kaisha Smoke sensor
GB2302943A (en) * 1993-04-09 1997-02-05 Hochiki Co Light scattering smoke detector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4226533A (en) * 1978-09-11 1980-10-07 General Electric Company Optical particle detector
DE3831654A1 (en) * 1988-09-17 1990-03-22 Hartwig Beyersdorf OPTICAL SMOKE DETECTOR
CN1034443C (en) * 1990-12-05 1997-04-02 中国科学院上海光学精密机械研究所 Optical probe for laser dust particle calculator
JPH0579979A (en) * 1991-08-06 1993-03-30 Matsushita Electric Works Ltd Photoelectric separation light reduction type smoke detector
JP2648560B2 (en) * 1993-04-09 1997-09-03 ホーチキ株式会社 Scattered light smoke detector
JP2787001B2 (en) * 1994-12-12 1998-08-13 ホーチキ株式会社 Photoelectric smoke detector
EP0986680B1 (en) * 1996-07-16 2002-08-21 R. O'Rourke and son Limited Improvements in or relating to concrete structures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115477B (en) * 1959-08-12 1961-10-19 Lentia Gmbh Stationary, industrial aerosol measuring device
DE1177042B (en) * 1962-03-22 1964-08-27 Walther & Cie Ag Smoke detector based on the Tyndall effect
DE2758517A1 (en) * 1977-01-07 1978-07-13 Gen Electric SMOKE DETECTOR WITH A DARK FIELD OPTICS
US5502434A (en) * 1992-05-29 1996-03-26 Hockiki Kabushiki Kaisha Smoke sensor
GB2302943A (en) * 1993-04-09 1997-02-05 Hochiki Co Light scattering smoke detector

Also Published As

Publication number Publication date
GB2340601A (en) 2000-02-23
TW392133B (en) 2000-06-01
HK1027866A1 (en) 2001-01-23
US6271758B1 (en) 2001-08-07
CH693776A5 (en) 2004-01-30
AU7453898A (en) 1998-12-30
AU733167B2 (en) 2001-05-10
WO1998054565A1 (en) 1998-12-03
CN1123770C (en) 2003-10-08
DE19882465T1 (en) 2000-05-25
KR20010013115A (en) 2001-02-26
KR100470235B1 (en) 2005-02-07
CN1258353A (en) 2000-06-28
GB9928169D0 (en) 2000-01-26
DE19882465B4 (en) 2009-09-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130528